1// SPDX-License-Identifier: GPL-2.0 2/* Internationalization implementation. Includes definitions of English 3 * string arrays, and the i18n pointer. 4 */ 5 6#include <linux/slab.h> /* For kmalloc. */ 7#include <linux/ctype.h> 8#include <linux/module.h> 9#include <linux/string.h> 10#include "speakup.h" 11#include "spk_priv.h" 12 13static char *speakup_msgs[MSG_LAST_INDEX]; 14static char *speakup_default_msgs[MSG_LAST_INDEX] = { 15 [MSG_BLANK] = "blank", 16 [MSG_IAM_ALIVE] = "I'm aLive!", 17 [MSG_YOU_KILLED_SPEAKUP] = "You killed speakup!", 18 [MSG_HEY_THATS_BETTER] = "hey. That's better!", 19 [MSG_YOU_TURNED_ME_OFF] = "You turned me off!", 20 [MSG_PARKED] = "parked!", 21 [MSG_UNPARKED] = "unparked!", 22 [MSG_MARK] = "mark", 23 [MSG_CUT] = "cut", 24 [MSG_MARK_CLEARED] = "mark, cleared", 25 [MSG_PASTE] = "paste", 26 [MSG_BRIGHT] = "bright", 27 [MSG_ON_BLINKING] = "on blinking", 28 [MSG_OFF] = "off", 29 [MSG_ON] = "on", 30 [MSG_NO_WINDOW] = "no window", 31 [MSG_CURSORING_OFF] = "cursoring off", 32 [MSG_CURSORING_ON] = "cursoring on", 33 [MSG_HIGHLIGHT_TRACKING] = "highlight tracking", 34 [MSG_READ_WINDOW] = "read windo", 35 [MSG_READ_ALL] = "read all", 36 [MSG_EDIT_DONE] = "edit done", 37 [MSG_WINDOW_ALREADY_SET] = "window already set, clear then reset", 38 [MSG_END_BEFORE_START] = "error end before start", 39 [MSG_WINDOW_CLEARED] = "window cleared", 40 [MSG_WINDOW_SILENCED] = "window silenced", 41 [MSG_WINDOW_SILENCE_DISABLED] = "window silence disabled", 42 [MSG_ERROR] = "error", 43 [MSG_GOTO_CANCELED] = "goto canceled", 44 [MSG_GOTO] = "go to?", 45 [MSG_LEAVING_HELP] = "leaving help", 46 [MSG_IS_UNASSIGNED] = "is unassigned", 47 [MSG_HELP_INFO] = 48 "press space to exit, up or down to scroll, or a letter to go to a command", 49 [MSG_EDGE_TOP] = "top,", 50 [MSG_EDGE_BOTTOM] = "bottom,", 51 [MSG_EDGE_LEFT] = "left,", 52 [MSG_EDGE_RIGHT] = "right,", 53 [MSG_NUMBER] = "number", 54 [MSG_SPACE] = "space", 55 [MSG_START] = "start", 56 [MSG_END] = "end", 57 [MSG_CTRL] = "control-", 58 [MSG_DISJUNCTION] = "or", 59 60/* Messages with embedded format specifiers. */ 61 [MSG_POS_INFO] = "line %ld, col %ld, t t y %d", 62 [MSG_CHAR_INFO] = "hex %02x, decimal %d", 63 [MSG_REPEAT_DESC] = "times %d .", 64 [MSG_REPEAT_DESC2] = "repeated %d .", 65 [MSG_WINDOW_LINE] = "window is line %d", 66 [MSG_WINDOW_BOUNDARY] = "%s at line %d, column %d", 67 [MSG_EDIT_PROMPT] = "edit %s, press space when done", 68 [MSG_NO_COMMAND] = "no commands for %c", 69 [MSG_KEYDESC] = "is %s", 70 71 /* Control keys. */ 72 /* Most of these duplicate the entries in state names. */ 73 [MSG_CTL_SHIFT] = "shift", 74 [MSG_CTL_ALTGR] = "altgr", 75 [MSG_CTL_CONTROL] = "control", 76 [MSG_CTL_ALT] = "alt", 77 [MSG_CTL_LSHIFT] = "l shift", 78 [MSG_CTL_SPEAKUP] = "speakup", 79 [MSG_CTL_LCONTROL] = "l control", 80 [MSG_CTL_RCONTROL] = "r control", 81 [MSG_CTL_CAPSSHIFT] = "caps shift", 82 83 /* Color names. */ 84 [MSG_COLOR_BLACK] = "black", 85 [MSG_COLOR_BLUE] = "blue", 86 [MSG_COLOR_GREEN] = "green", 87 [MSG_COLOR_CYAN] = "cyan", 88 [MSG_COLOR_RED] = "red", 89 [MSG_COLOR_MAGENTA] = "magenta", 90 [MSG_COLOR_YELLOW] = "yellow", 91 [MSG_COLOR_WHITE] = "white", 92 [MSG_COLOR_GREY] = "grey", 93 [MSG_COLOR_BRIGHTBLUE] = "bright blue", 94 [MSG_COLOR_BRIGHTGREEN] = "bright green", 95 [MSG_COLOR_BRIGHTCYAN] = "bright cyan", 96 [MSG_COLOR_BRIGHTRED] = "bright red", 97 [MSG_COLOR_BRIGHTMAGENTA] = "bright magenta", 98 [MSG_COLOR_BRIGHTYELLOW] = "bright yellow", 99 [MSG_COLOR_BRIGHTWHITE] = "bright white", 100 101 /* Names of key states. */ 102 [MSG_STATE_DOUBLE] = "double", 103 [MSG_STATE_SPEAKUP] = "speakup", 104 [MSG_STATE_ALT] = "alt", 105 [MSG_STATE_CONTROL] = "ctrl", 106 [MSG_STATE_ALTGR] = "altgr", 107 [MSG_STATE_SHIFT] = "shift", 108 109 /* Key names. */ 110 [MSG_KEYNAME_ESC] = "escape", 111 [MSG_KEYNAME_1] = "1", 112 [MSG_KEYNAME_2] = "2", 113 [MSG_KEYNAME_3] = "3", 114 [MSG_KEYNAME_4] = "4", 115 [MSG_KEYNAME_5] = "5", 116 [MSG_KEYNAME_6] = "6", 117 [MSG_KEYNAME_7] = "7", 118 [MSG_KEYNAME_8] = "8", 119 [MSG_KEYNAME_9] = "9", 120 [MSG_KEYNAME_0] = "0", 121 [MSG_KEYNAME_DASH] = "minus", 122 [MSG_KEYNAME_EQUAL] = "equal", 123 [MSG_KEYNAME_BS] = "back space", 124 [MSG_KEYNAME_TAB] = "tab", 125 [MSG_KEYNAME_Q] = "q", 126 [MSG_KEYNAME_W] = "w", 127 [MSG_KEYNAME_E] = "e", 128 [MSG_KEYNAME_R] = "r", 129 [MSG_KEYNAME_T] = "t", 130 [MSG_KEYNAME_Y] = "y", 131 [MSG_KEYNAME_U] = "u", 132 [MSG_KEYNAME_I] = "i", 133 [MSG_KEYNAME_O] = "o", 134 [MSG_KEYNAME_P] = "p", 135 [MSG_KEYNAME_LEFTBRACE] = "left brace", 136 [MSG_KEYNAME_RIGHTBRACE] = "right brace", 137 [MSG_KEYNAME_ENTER] = "enter", 138 [MSG_KEYNAME_LEFTCTRL] = "left control", 139 [MSG_KEYNAME_A] = "a", 140 [MSG_KEYNAME_S] = "s", 141 [MSG_KEYNAME_D] = "d", 142 [MSG_KEYNAME_F] = "f", 143 [MSG_KEYNAME_G] = "g", 144 [MSG_KEYNAME_H] = "h", 145 [MSG_KEYNAME_J] = "j", 146 [MSG_KEYNAME_K] = "k", 147 [MSG_KEYNAME_L] = "l", 148 [MSG_KEYNAME_SEMICOLON] = "semicolon", 149 [MSG_KEYNAME_SINGLEQUOTE] = "apostrophe", 150 [MSG_KEYNAME_GRAVE] = "accent", 151 [MSG_KEYNAME_LEFTSHFT] = "left shift", 152 [MSG_KEYNAME_BACKSLASH] = "back slash", 153 [MSG_KEYNAME_Z] = "z", 154 [MSG_KEYNAME_X] = "x", 155 [MSG_KEYNAME_C] = "c", 156 [MSG_KEYNAME_V] = "v", 157 [MSG_KEYNAME_B] = "b", 158 [MSG_KEYNAME_N] = "n", 159 [MSG_KEYNAME_M] = "m", 160 [MSG_KEYNAME_COMMA] = "comma", 161 [MSG_KEYNAME_DOT] = "dot", 162 [MSG_KEYNAME_SLASH] = "slash", 163 [MSG_KEYNAME_RIGHTSHFT] = "right shift", 164 [MSG_KEYNAME_KPSTAR] = "keypad asterisk", 165 [MSG_KEYNAME_LEFTALT] = "left alt", 166 [MSG_KEYNAME_SPACE] = "space", 167 [MSG_KEYNAME_CAPSLOCK] = "caps lock", 168 [MSG_KEYNAME_F1] = "f1", 169 [MSG_KEYNAME_F2] = "f2", 170 [MSG_KEYNAME_F3] = "f3", 171 [MSG_KEYNAME_F4] = "f4", 172 [MSG_KEYNAME_F5] = "f5", 173 [MSG_KEYNAME_F6] = "f6", 174 [MSG_KEYNAME_F7] = "f7", 175 [MSG_KEYNAME_F8] = "f8", 176 [MSG_KEYNAME_F9] = "f9", 177 [MSG_KEYNAME_F10] = "f10", 178 [MSG_KEYNAME_NUMLOCK] = "num lock", 179 [MSG_KEYNAME_SCROLLLOCK] = "scroll lock", 180 [MSG_KEYNAME_KP7] = "keypad 7", 181 [MSG_KEYNAME_KP8] = "keypad 8", 182 [MSG_KEYNAME_KP9] = "keypad 9", 183 [MSG_KEYNAME_KPMINUS] = "keypad minus", 184 [MSG_KEYNAME_KP4] = "keypad 4", 185 [MSG_KEYNAME_KP5] = "keypad 5", 186 [MSG_KEYNAME_KP6] = "keypad 6", 187 [MSG_KEYNAME_KPPLUS] = "keypad plus", 188 [MSG_KEYNAME_KP1] = "keypad 1", 189 [MSG_KEYNAME_KP2] = "keypad 2", 190 [MSG_KEYNAME_KP3] = "keypad 3", 191 [MSG_KEYNAME_KP0] = "keypad 0", 192 [MSG_KEYNAME_KPDOT] = "keypad dot", 193 [MSG_KEYNAME_103RD] = "103rd", 194 [MSG_KEYNAME_F13] = "f13", 195 [MSG_KEYNAME_102ND] = "102nd", 196 [MSG_KEYNAME_F11] = "f11", 197 [MSG_KEYNAME_F12] = "f12", 198 [MSG_KEYNAME_F14] = "f14", 199 [MSG_KEYNAME_F15] = "f15", 200 [MSG_KEYNAME_F16] = "f16", 201 [MSG_KEYNAME_F17] = "f17", 202 [MSG_KEYNAME_F18] = "f18", 203 [MSG_KEYNAME_F19] = "f19", 204 [MSG_KEYNAME_F20] = "f20", 205 [MSG_KEYNAME_KPENTER] = "keypad enter", 206 [MSG_KEYNAME_RIGHTCTRL] = "right control", 207 [MSG_KEYNAME_KPSLASH] = "keypad slash", 208 [MSG_KEYNAME_SYSRQ] = "sysrq", 209 [MSG_KEYNAME_RIGHTALT] = "right alt", 210 [MSG_KEYNAME_LF] = "line feed", 211 [MSG_KEYNAME_HOME] = "home", 212 [MSG_KEYNAME_UP] = "up", 213 [MSG_KEYNAME_PGUP] = "page up", 214 [MSG_KEYNAME_LEFT] = "left", 215 [MSG_KEYNAME_RIGHT] = "right", 216 [MSG_KEYNAME_END] = "end", 217 [MSG_KEYNAME_DOWN] = "down", 218 [MSG_KEYNAME_PGDN] = "page down", 219 [MSG_KEYNAME_INS] = "insert", 220 [MSG_KEYNAME_DEL] = "delete", 221 [MSG_KEYNAME_MACRO] = "macro", 222 [MSG_KEYNAME_MUTE] = "mute", 223 [MSG_KEYNAME_VOLDOWN] = "volume down", 224 [MSG_KEYNAME_VOLUP] = "volume up", 225 [MSG_KEYNAME_POWER] = "power", 226 [MSG_KEYNAME_KPEQUAL] = "keypad equal", 227 [MSG_KEYNAME_KPPLUSDASH] = "keypad plusminus", 228 [MSG_KEYNAME_PAUSE] = "pause", 229 [MSG_KEYNAME_F21] = "f21", 230 [MSG_KEYNAME_F22] = "f22", 231 [MSG_KEYNAME_F23] = "f23", 232 [MSG_KEYNAME_F24] = "f24", 233 [MSG_KEYNAME_KPCOMMA] = "keypad comma", 234 [MSG_KEYNAME_LEFTMETA] = "left meta", 235 [MSG_KEYNAME_RIGHTMETA] = "right meta", 236 [MSG_KEYNAME_COMPOSE] = "compose", 237 [MSG_KEYNAME_STOP] = "stop", 238 [MSG_KEYNAME_AGAIN] = "again", 239 [MSG_KEYNAME_PROPS] = "props", 240 [MSG_KEYNAME_UNDO] = "undo", 241 [MSG_KEYNAME_FRONT] = "front", 242 [MSG_KEYNAME_COPY] = "copy", 243 [MSG_KEYNAME_OPEN] = "open", 244 [MSG_KEYNAME_PASTE] = "paste", 245 [MSG_KEYNAME_FIND] = "find", 246 [MSG_KEYNAME_CUT] = "cut", 247 [MSG_KEYNAME_HELP] = "help", 248 [MSG_KEYNAME_MENU] = "menu", 249 [MSG_KEYNAME_CALC] = "calc", 250 [MSG_KEYNAME_SETUP] = "setup", 251 [MSG_KEYNAME_SLEEP] = "sleep", 252 [MSG_KEYNAME_WAKEUP] = "wakeup", 253 [MSG_KEYNAME_FILE] = "file", 254 [MSG_KEYNAME_SENDFILE] = "send file", 255 [MSG_KEYNAME_DELFILE] = "delete file", 256 [MSG_KEYNAME_XFER] = "transfer", 257 [MSG_KEYNAME_PROG1] = "prog1", 258 [MSG_KEYNAME_PROG2] = "prog2", 259 [MSG_KEYNAME_WWW] = "www", 260 [MSG_KEYNAME_MSDOS] = "msdos", 261 [MSG_KEYNAME_COFFEE] = "coffee", 262 [MSG_KEYNAME_DIRECTION] = "direction", 263 [MSG_KEYNAME_CYCLEWINDOWS] = "cycle windows", 264 [MSG_KEYNAME_MAIL] = "mail", 265 [MSG_KEYNAME_BOOKMARKS] = "bookmarks", 266 [MSG_KEYNAME_COMPUTER] = "computer", 267 [MSG_KEYNAME_BACK] = "back", 268 [MSG_KEYNAME_FORWARD] = "forward", 269 [MSG_KEYNAME_CLOSECD] = "close cd", 270 [MSG_KEYNAME_EJECTCD] = "eject cd", 271 [MSG_KEYNAME_EJECTCLOSE] = "eject close cd", 272 [MSG_KEYNAME_NEXTSONG] = "next song", 273 [MSG_KEYNAME_PLAYPAUSE] = "play pause", 274 [MSG_KEYNAME_PREVSONG] = "previous song", 275 [MSG_KEYNAME_STOPCD] = "stop cd", 276 [MSG_KEYNAME_RECORD] = "record", 277 [MSG_KEYNAME_REWIND] = "rewind", 278 [MSG_KEYNAME_PHONE] = "phone", 279 [MSG_KEYNAME_ISO] = "iso", 280 [MSG_KEYNAME_CONFIG] = "config", 281 [MSG_KEYNAME_HOMEPG] = "home page", 282 [MSG_KEYNAME_REFRESH] = "refresh", 283 [MSG_KEYNAME_EXIT] = "exit", 284 [MSG_KEYNAME_MOVE] = "move", 285 [MSG_KEYNAME_EDIT] = "edit", 286 [MSG_KEYNAME_SCROLLUP] = "scroll up", 287 [MSG_KEYNAME_SCROLLDN] = "scroll down", 288 [MSG_KEYNAME_KPLEFTPAR] = "keypad left paren", 289 [MSG_KEYNAME_KPRIGHTPAR] = "keypad right paren", 290 291 /* Function names. */ 292 [MSG_FUNCNAME_ATTRIB_BLEEP_DEC] = "attribute bleep decrement", 293 [MSG_FUNCNAME_ATTRIB_BLEEP_INC] = "attribute bleep increment", 294 [MSG_FUNCNAME_BLEEPS_DEC] = "bleeps decrement", 295 [MSG_FUNCNAME_BLEEPS_INC] = "bleeps increment", 296 [MSG_FUNCNAME_CHAR_FIRST] = "character, first", 297 [MSG_FUNCNAME_CHAR_LAST] = "character, last", 298 [MSG_FUNCNAME_CHAR_CURRENT] = "character, say current", 299 [MSG_FUNCNAME_CHAR_HEX_AND_DEC] = "character, say hex and decimal", 300 [MSG_FUNCNAME_CHAR_NEXT] = "character, say next", 301 [MSG_FUNCNAME_CHAR_PHONETIC] = "character, say phonetic", 302 [MSG_FUNCNAME_CHAR_PREVIOUS] = "character, say previous", 303 [MSG_FUNCNAME_CURSOR_PARK] = "cursor park", 304 [MSG_FUNCNAME_CUT] = "cut", 305 [MSG_FUNCNAME_EDIT_DELIM] = "edit delimiters", 306 [MSG_FUNCNAME_EDIT_EXNUM] = "edit exnum", 307 [MSG_FUNCNAME_EDIT_MOST] = "edit most", 308 [MSG_FUNCNAME_EDIT_REPEATS] = "edit repeats", 309 [MSG_FUNCNAME_EDIT_SOME] = "edit some", 310 [MSG_FUNCNAME_GOTO] = "go to", 311 [MSG_FUNCNAME_GOTO_BOTTOM] = "go to bottom edge", 312 [MSG_FUNCNAME_GOTO_LEFT] = "go to left edge", 313 [MSG_FUNCNAME_GOTO_RIGHT] = "go to right edge", 314 [MSG_FUNCNAME_GOTO_TOP] = "go to top edge", 315 [MSG_FUNCNAME_HELP] = "help", 316 [MSG_FUNCNAME_LINE_SAY_CURRENT] = "line, say current", 317 [MSG_FUNCNAME_LINE_SAY_NEXT] = "line, say next", 318 [MSG_FUNCNAME_LINE_SAY_PREVIOUS] = "line, say previous", 319 [MSG_FUNCNAME_LINE_SAY_WITH_INDENT] = "line, say with indent", 320 [MSG_FUNCNAME_PASTE] = "paste", 321 [MSG_FUNCNAME_PITCH_DEC] = "pitch decrement", 322 [MSG_FUNCNAME_PITCH_INC] = "pitch increment", 323 [MSG_FUNCNAME_PUNC_DEC] = "punctuation decrement", 324 [MSG_FUNCNAME_PUNC_INC] = "punctuation increment", 325 [MSG_FUNCNAME_PUNC_LEVEL_DEC] = "punc level decrement", 326 [MSG_FUNCNAME_PUNC_LEVEL_INC] = "punc level increment", 327 [MSG_FUNCNAME_QUIET] = "quiet", 328 [MSG_FUNCNAME_RATE_DEC] = "rate decrement", 329 [MSG_FUNCNAME_RATE_INC] = "rate increment", 330 [MSG_FUNCNAME_READING_PUNC_DEC] = "reading punctuation decrement", 331 [MSG_FUNCNAME_READING_PUNC_INC] = "reading punctuation increment", 332 [MSG_FUNCNAME_SAY_ATTRIBUTES] = "say attributes", 333 [MSG_FUNCNAME_SAY_FROM_LEFT] = "say from left", 334 [MSG_FUNCNAME_SAY_FROM_TOP] = "say from top", 335 [MSG_FUNCNAME_SAY_POSITION] = "say position", 336 [MSG_FUNCNAME_SAY_SCREEN] = "say screen", 337 [MSG_FUNCNAME_SAY_TO_BOTTOM] = "say to bottom", 338 [MSG_FUNCNAME_SAY_TO_RIGHT] = "say to right", 339 [MSG_FUNCNAME_SPEAKUP] = "speakup", 340 [MSG_FUNCNAME_SPEAKUP_LOCK] = "speakup lock", 341 [MSG_FUNCNAME_SPEAKUP_OFF] = "speakup off", 342 [MSG_FUNCNAME_SPEECH_KILL] = "speech kill", 343 [MSG_FUNCNAME_SPELL_DELAY_DEC] = "spell delay decrement", 344 [MSG_FUNCNAME_SPELL_DELAY_INC] = "spell delay increment", 345 [MSG_FUNCNAME_SPELL_WORD] = "spell word", 346 [MSG_FUNCNAME_SPELL_WORD_PHONETICALLY] = "spell word phonetically", 347 [MSG_FUNCNAME_TONE_DEC] = "tone decrement", 348 [MSG_FUNCNAME_TONE_INC] = "tone increment", 349 [MSG_FUNCNAME_VOICE_DEC] = "voice decrement", 350 [MSG_FUNCNAME_VOICE_INC] = "voice increment", 351 [MSG_FUNCNAME_VOLUME_DEC] = "volume decrement", 352 [MSG_FUNCNAME_VOLUME_INC] = "volume increment", 353 [MSG_FUNCNAME_WINDOW_CLEAR] = "window, clear", 354 [MSG_FUNCNAME_WINDOW_SAY] = "window, say", 355 [MSG_FUNCNAME_WINDOW_SET] = "window, set", 356 [MSG_FUNCNAME_WINDOW_SILENCE] = "window, silence", 357 [MSG_FUNCNAME_WORD_SAY_CURRENT] = "word, say current", 358 [MSG_FUNCNAME_WORD_SAY_NEXT] = "word, say next", 359 [MSG_FUNCNAME_WORD_SAY_PREVIOUS] = "word, say previous", 360}; 361 362static struct msg_group_t all_groups[] = { 363 { 364 .name = "ctl_keys", 365 .start = MSG_CTL_START, 366 .end = MSG_CTL_END, 367 }, 368 { 369 .name = "colors", 370 .start = MSG_COLORS_START, 371 .end = MSG_COLORS_END, 372 }, 373 { 374 .name = "formatted", 375 .start = MSG_FORMATTED_START, 376 .end = MSG_FORMATTED_END, 377 }, 378 { 379 .name = "function_names", 380 .start = MSG_FUNCNAMES_START, 381 .end = MSG_FUNCNAMES_END, 382 }, 383 { 384 .name = "key_names", 385 .start = MSG_KEYNAMES_START, 386 .end = MSG_KEYNAMES_END, 387 }, 388 { 389 .name = "announcements", 390 .start = MSG_ANNOUNCEMENTS_START, 391 .end = MSG_ANNOUNCEMENTS_END, 392 }, 393 { 394 .name = "states", 395 .start = MSG_STATES_START, 396 .end = MSG_STATES_END, 397 }, 398}; 399 400static const int num_groups = ARRAY_SIZE(all_groups); 401 402char *spk_msg_get(enum msg_index_t index) 403{ 404 return speakup_msgs[index]; 405} 406 407/* 408 * Function: next_specifier 409 * Finds the start of the next format specifier in the argument string. 410 * Return value: pointer to start of format 411 * specifier, or NULL if no specifier exists. 412 */ 413static char *next_specifier(char *input) 414{ 415 int found = 0; 416 char *next_percent = input; 417 418 while (next_percent && !found) { 419 next_percent = strchr(next_percent, '%'); 420 if (next_percent) { 421 /* skip over doubled percent signs */ 422 while (next_percent[0] == '%' && 423 next_percent[1] == '%') 424 next_percent += 2; 425 if (*next_percent == '%') 426 found = 1; 427 else if (*next_percent == '\0') 428 next_percent = NULL; 429 } 430 } 431 432 return next_percent; 433} 434 435/* Skip over 0 or more flags. */ 436static char *skip_flags(char *input) 437{ 438 while ((*input != '\0') && strchr(" 0+-#", *input)) 439 input++; 440 return input; 441} 442 443/* Skip over width.precision, if it exists. */ 444static char *skip_width(char *input) 445{ 446 while (isdigit(*input)) 447 input++; 448 if (*input == '.') { 449 input++; 450 while (isdigit(*input)) 451 input++; 452 } 453 return input; 454} 455 456/* 457 * Skip past the end of the conversion part. 458 * Note that this code only accepts a handful of conversion specifiers: 459 * c d s x and ld. Not accidental; these are exactly the ones used in 460 * the default group of formatted messages. 461 */ 462static char *skip_conversion(char *input) 463{ 464 if ((input[0] == 'l') && (input[1] == 'd')) 465 input += 2; 466 else if ((*input != '\0') && strchr("cdsx", *input)) 467 input++; 468 return input; 469} 470 471/* 472 * Function: find_specifier_end 473 * Return a pointer to the end of the format specifier. 474 */ 475static char *find_specifier_end(char *input) 476{ 477 input++; /* Advance over %. */ 478 input = skip_flags(input); 479 input = skip_width(input); 480 input = skip_conversion(input); 481 return input; 482} 483 484/* 485 * Function: compare_specifiers 486 * Compare the format specifiers pointed to by *input1 and *input2. 487 * Return true if they are the same, false otherwise. 488 * Advance *input1 and *input2 so that they point to the character following 489 * the end of the specifier. 490 */ 491static bool compare_specifiers(char **input1, char **input2) 492{ 493 bool same = false; 494 char *end1 = find_specifier_end(*input1); 495 char *end2 = find_specifier_end(*input2); 496 size_t length1 = end1 - *input1; 497 size_t length2 = end2 - *input2; 498 499 if ((length1 == length2) && !memcmp(*input1, *input2, length1)) 500 same = true; 501 502 *input1 = end1; 503 *input2 = end2; 504 return same; 505} 506 507/* 508 * Function: fmt_validate 509 * Check that two format strings contain the same number of format specifiers, 510 * and that the order of specifiers is the same in both strings. 511 * Return true if the condition holds, false if it doesn't. 512 */ 513static bool fmt_validate(char *template, char *user) 514{ 515 bool valid = true; 516 bool still_comparing = true; 517 char *template_ptr = template; 518 char *user_ptr = user; 519 520 while (still_comparing && valid) { 521 template_ptr = next_specifier(template_ptr); 522 user_ptr = next_specifier(user_ptr); 523 if (template_ptr && user_ptr) { 524 /* Both have at least one more specifier. */ 525 valid = compare_specifiers(&template_ptr, &user_ptr); 526 } else { 527 /* No more format specifiers in one or both strings. */ 528 still_comparing = false; 529 /* See if one has more specifiers than the other. */ 530 if (template_ptr || user_ptr) 531 valid = false; 532 } 533 } 534 return valid; 535} 536 537/* 538 * Function: msg_set 539 * Description: Add a user-supplied message to the user_messages array. 540 * The message text is copied to a memory area allocated with kmalloc. 541 * If the function fails, then user_messages is untouched. 542 * Arguments: 543 * - index: a message number, as found in i18n.h. 544 * - text: text of message. Not NUL-terminated. 545 * - length: number of bytes in text. 546 * Failure conditions: 547 * -EINVAL - Invalid format specifiers in formatted message or illegal index. 548 * -ENOMEM - Unable to allocate memory. 549 */ 550ssize_t spk_msg_set(enum msg_index_t index, char *text, size_t length) 551{ 552 char *newstr = NULL; 553 unsigned long flags; 554 555 if ((index < MSG_FIRST_INDEX) || (index >= MSG_LAST_INDEX)) 556 return -EINVAL; 557 558 newstr = kmemdup_nul(text, length, GFP_KERNEL); 559 if (!newstr) 560 return -ENOMEM; 561 562 if (index >= MSG_FORMATTED_START && 563 index <= MSG_FORMATTED_END && 564 !fmt_validate(speakup_default_msgs[index], newstr)) { 565 kfree(newstr); 566 return -EINVAL; 567 } 568 spin_lock_irqsave(&speakup_info.spinlock, flags); 569 if (speakup_msgs[index] != speakup_default_msgs[index]) 570 kfree(speakup_msgs[index]); 571 speakup_msgs[index] = newstr; 572 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 573 return 0; 574} 575 576/* 577 * Find a message group, given its name. Return a pointer to the structure 578 * if found, or NULL otherwise. 579 */ 580struct msg_group_t *spk_find_msg_group(const char *group_name) 581{ 582 struct msg_group_t *group = NULL; 583 int i; 584 585 for (i = 0; i < num_groups; i++) { 586 if (!strcmp(all_groups[i].name, group_name)) { 587 group = &all_groups[i]; 588 break; 589 } 590 } 591 return group; 592} 593 594void spk_reset_msg_group(struct msg_group_t *group) 595{ 596 unsigned long flags; 597 enum msg_index_t i; 598 599 spin_lock_irqsave(&speakup_info.spinlock, flags); 600 601 for (i = group->start; i <= group->end; i++) { 602 if (speakup_msgs[i] != speakup_default_msgs[i]) 603 kfree(speakup_msgs[i]); 604 speakup_msgs[i] = speakup_default_msgs[i]; 605 } 606 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 607} 608 609/* Called at initialization time, to establish default messages. */ 610void spk_initialize_msgs(void) 611{ 612 memcpy(speakup_msgs, speakup_default_msgs, 613 sizeof(speakup_default_msgs)); 614} 615 616/* Free user-supplied strings when module is unloaded: */ 617void spk_free_user_msgs(void) 618{ 619 enum msg_index_t index; 620 unsigned long flags; 621 622 spin_lock_irqsave(&speakup_info.spinlock, flags); 623 for (index = MSG_FIRST_INDEX; index < MSG_LAST_INDEX; index++) { 624 if (speakup_msgs[index] != speakup_default_msgs[index]) { 625 kfree(speakup_msgs[index]); 626 speakup_msgs[index] = speakup_default_msgs[index]; 627 } 628 } 629 spin_unlock_irqrestore(&speakup_info.spinlock, flags); 630} 631